Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner
The thermal management system of electric vehicles is different from that of traditional passenger vehicles. For electric vehicles with a heat pump system and liquid cooling battery, the refrigerant charge is increased by 400–800 g compared with traditional air conditioning. If a combustible refrige...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2022-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.01.059 |
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| _version_ | 1850233293204619264 |
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| author | Wang Linlin Yang Zhao Wang Dan |
| author_facet | Wang Linlin Yang Zhao Wang Dan |
| author_sort | Wang Linlin |
| collection | DOAJ |
| description | The thermal management system of electric vehicles is different from that of traditional passenger vehicles. For electric vehicles with a heat pump system and liquid cooling battery, the refrigerant charge is increased by 400–800 g compared with traditional air conditioning. If a combustible refrigerant is used, any leakage will spread to the passenger compartment, and the risk of combustion will increase. In this study, the concentration change process and maximum concentration of R1234yf refrigerant after evaporator damage and leakage with the air supply into the passenger compartment were dynamically monitored by numerical simulation. The results show that the refrigerant in the rear row accumulates more easily than that in the front row. After the refrigerant was completely leaked, the highest average R1234yf volume concentration at the four air outlets was 1.58%. The highest average R1234yf volume concentration at the breathing point of the four passengers was 0.99%. The highest average R1234yf volume concentration at the feet of the four passengers was 0.95%. The highest volume concentration in the passenger compartment was lower than the lower flammability limit of R1234yf. Compared with the test data of different vehicle models, it was found that different vehicle models had the greatest influence on the refrigerant volume concentration, which was 1.2% for different vehicle model. |
| format | Article |
| id | doaj-art-abedd9c01313432aaab2806e14fd0b72 |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-abedd9c01313432aaab2806e14fd0b722025-08-20T02:02:57ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392022-01-014366509498Study on Leakage Diffusion of R1234yf Vehicle Air ConditionerWang LinlinYang ZhaoWang DanThe thermal management system of electric vehicles is different from that of traditional passenger vehicles. For electric vehicles with a heat pump system and liquid cooling battery, the refrigerant charge is increased by 400–800 g compared with traditional air conditioning. If a combustible refrigerant is used, any leakage will spread to the passenger compartment, and the risk of combustion will increase. In this study, the concentration change process and maximum concentration of R1234yf refrigerant after evaporator damage and leakage with the air supply into the passenger compartment were dynamically monitored by numerical simulation. The results show that the refrigerant in the rear row accumulates more easily than that in the front row. After the refrigerant was completely leaked, the highest average R1234yf volume concentration at the four air outlets was 1.58%. The highest average R1234yf volume concentration at the breathing point of the four passengers was 0.99%. The highest average R1234yf volume concentration at the feet of the four passengers was 0.95%. The highest volume concentration in the passenger compartment was lower than the lower flammability limit of R1234yf. Compared with the test data of different vehicle models, it was found that different vehicle models had the greatest influence on the refrigerant volume concentration, which was 1.2% for different vehicle model.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.01.059automotive air conditioningleakage modelrefrigerantflammability |
| spellingShingle | Wang Linlin Yang Zhao Wang Dan Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner Zhileng xuebao automotive air conditioning leakage model refrigerant flammability |
| title | Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner |
| title_full | Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner |
| title_fullStr | Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner |
| title_full_unstemmed | Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner |
| title_short | Study on Leakage Diffusion of R1234yf Vehicle Air Conditioner |
| title_sort | study on leakage diffusion of r1234yf vehicle air conditioner |
| topic | automotive air conditioning leakage model refrigerant flammability |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.01.059 |
| work_keys_str_mv | AT wanglinlin studyonleakagediffusionofr1234yfvehicleairconditioner AT yangzhao studyonleakagediffusionofr1234yfvehicleairconditioner AT wangdan studyonleakagediffusionofr1234yfvehicleairconditioner |